Improvement in hot air registers



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` `Hut-Air Registers. NO, 144,616, Patented Nov.'18, 1873.

masas' l gW/ mm' f5 W M M ff Ni-,NITED STATES WILLIAM EIGETON, orMALDEN, MASSACHUSETTS.

|M'PRovEMEN1- IN HoriAm REGISTERS.

Specification forming part of Letters Patent o. .144,6 16, datedNovember 18, '1873; application led October 21, 1873.

To all whom 'it may conc/1m:

Be it known that I, WILLIAM HIGHTQN, of Malden, in the county ofMiddlesex and State of Massachusetts, have invented certain Improvementsin HotAir or Ventilator Registers, of which the following is a full,clear, and exact description, reference being had to the accompanyingdrawings, making part of this specification, in whic Figure l is a planof a hot-air register constructed in accordance with my invention. Fig.2 is a plan oi the same with the top or grate removed. Fig. 3 is atransverse vertical section on the line .fr x of Fig. l. Fig. 4 is alongitudinal vertical section on the line y y of Fig. 1. Fig. 5 is asection on the line z z of Fig. 3, looking in the direction of thearrow. Fig. Gis a plan of one end of the under side of the register;Fig. 7, detail.

My invention consists in a lever which is pivoted to a plate secured tothe registerframe,` and is provided with one or more pins orprojections, tting into one or more notches in a lug or projection onthe slide-bar which actuates the shutters, which construction affords aconvenient and reliable means of op erating the shutters with the foot.

To enable others skilled in the art to understand and use my invention,I will proceed to describe the manner in which I have carried it out.

In the said drawings, A represents the frame of the register, and B theslats or shutters, the pivots or gudgeons a. of which are supported inbearings in the end pieces b c. At one end of each shutter B is a lug orprojection, d, which extends up at right angles to its'surface, and ineach of these lugs is formed an open slot, e, which is inclined at anangle of forty-five degrees. C is av slide or bar,

which is provided with pins or projections g,

which iit into the slots e of the shutters, and thus, as the slide ismoved, the pins bear against the inclined sides` of the slots andpartially rotate the shutters on their pivots to open or close theregister. rlhe inclination of the slots e and the position of the pins gwith respect to the pivots of the shutters cause the leverage to beequalized, so that no additional force is required at the commencementof the opening or closing of the register, which is not the case withthe ordinary arrangement of pins and slots in common use, and themechanism is thus caused to operate with great ease and very littleiction, the bottom of the bar C rolling over rounded projections 8 onthe shutters adjacent to the pivots, instead of sliding thereon. The endpiece c is secured to the frame A, and held in place by screws h andnuts t', the screws passing through slots 7c, and` by this means theend' piece can be adjusted so as to bring it up close to the ends of theshutters, and thus prevent them from movinglaterally between theirbearings and rattling, as heretofore. In tting the piece c its endsshould be filed away so as to allow it to iit snugly up against theprojections m on the bottom of the frame, as seen in Fig. 6. At thecenter of the slide C is a projection, n, at the top of which, andextending out at right angles thereto, is a lip, p, in which are formedtwo rounded notches,

g, into which lit two pins, 1", on the under side of a lever, D, whichis pivoted at s to a plate, E, secured by a screw, q, to the frame A,the pins r projecting through a curved slot, 10, in

the plate.l At the outer end of the lever D is a serrated enlargement,1l, which projects up through a curved slot, t, in the grate or top Grof the register, so that it can be operated by the foot, and thus, asthis lever D is vibrated, the pins r strike against the sides of thenotches q and move the slide C, which operates the shutters, the slidebeing moved part 4 way by one of the pins r, and the balance of itsmovement being effected by the other pin 1', as the iirst pin is movedout of its notch, q. y

(See Fig. 5.) The slide C is steadied and held in position by the pins ron one side and a projection, l2, against which it rests, on the otherside.

It will be seen that-the operating mechanism is entirely disconnectedfrom the top or grate G, which can consequently be removed withoutdisturbing it, or without any liability of any of the parts droppingout, as is liable to occur with registers as now constructed.

I will now describe the device by which the lever D is operated when theregister is set in a wall at the mouth of a ventilator: H is a wheel,which is provided on its under side with a center-pin or pivot, c, whichts into a PATENT OFFICE. N r

hole the grate G, and at the outer end of each of the arms w o thisWheel is an aperture, 13, for the reception of a cord which is intendedto extend down into an accessible position, two cords being employed,attached to arms diametrieally opposite each other, so that the Wheelcan be partially revolved in either direction. One of the arms w is rmlyszcured by means of a screw, 14C, to the enlargement ll at the end ofthe lever D, and thus, as the Wheel is rotated by the cords, the leveris moved to operate the shutters as desired, the lever D being pivotedatav point directly beneath the center-pin of the Wheel H, so that bothcan move together, the slot t being curved to correspond to thismovement..

I claim- 1. The lever D, pivoted to the plate E, and

WM. HIGHTON.

' In presence of Y P. E. TEscHEMAcHER, W. J. CAMBRIDGE.

